---
title: "init(ListType:Head:Tail:)"
framework: security
role: symbol
role_heading: Initializer
path: "security/cssm_list-swift.struct/init(listtype:head:tail:)"
---

# init(ListType:Head:Tail:)

## Declaration

```swift
init(ListType: CSSM_LIST_TYPE, Head: CSSM_LIST_ELEMENT_PTR!, Tail: CSSM_LIST_ELEMENT_PTR!)
```